problems using these LEDs.MEMCPUPCI APCI BPCI CVRMDASDSPPS1PS2PS3NONOVERNMITEMPFAN REMINDLight path diagnostics tableThe System Error LED on the operator information panel is lit when certain systemerrors occur. If the System Error LED on your server is lit, see to table in“Information panel system error LED” on page 83 to determine the cause of theerror and the action you should take.POSTWhen you turn on the server, it performs a series of tests to check the operation ofserver components and some of the options installed in the server. This series oftests is called the power-on self-test, or POST.If POST finishes without detecting any problems, a single beep sounds, the firstscreen of your operating system or application program appears.If POST detects a problem, more than one beep sounds and an error messageappears on your screen. See “Beep symptoms” on page 81 and “POST errormessages” for more information.Notes:1. If you have a power-on password, or administrator password set (with RemoteSupervisor Adapter installed), you must type the password and press Enter,when prompted, before POST will continue.2. A single problem might cause several error messages. When this occurs, workto correct the cause of the first error message. After you correct the cause of thefirst error message, the other error messages usually will not occur the nexttime you run the test.POST error messagesThe table, “POST error codes” on page 91, provides information about the POSTerror messages that can appear during startup.Error logsThe POST error log contains the three most recent error codes and messages thatthe system generated during POST. The System Error Log contains error messagesissued during POST and all system status messages from the IBM RemoteSupervisor Adapter, if installed.12 Hardware Maintenance Manual: xSeries 342 Model 1RX, 2RX, 1TG, 2TG
